>> gregg: 81 in dallas, wow. that's amazing. maria, thank you very much. >> heather: what a difference. wow. serious new questions about the stunning resignation of c.i.a. director and retired four star general david petraeus. general petraeus stepping down after an f.b.i. investigation uncovered an affair with his married biographer. they are questioning the timing of this announcement. and possible connections to the ongoing investigation into the deadly terrorist attack on the u.s. consulate in libya. molly henneberg is live for us in washington with the very latest on this developing story. molly? >> the f.b.i. discovered that biographer appeared to have access to general petraeus' personal e-mail account. so f.b.i. agents started monitoring petraeus' e-mails, although he was not under investigation. they were concerned there may have been a security breach or concern that broadwell was stalking him and then they discovered the affair. meanwhile, petraeus, who had been the c.i.a. director for over a year, was supposed to tes